Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
DOI: https://doi.org/10.29363/nanoge.hopv.2020.094
Publication date: 6th February 2020
Despite an expeditious rise in its power coversion efficiency organolead halide perovskite solar cells (PSCs) still stand way behind commercialization because of two major challenges; poor stability and high toxicity of Pb. In a recent study on thermal stability of regular MAPbI3 solar cells, we found that spiro-OMeTAD (used as hole transporting material) plays a notorious role in performance deterioration of the cells at elevated temperatures. It seems that, not the degradation of perovskite (MAPbI3) but some physical/chemical alteration at the perovskite/spiro-OMeTAD interface is a more serious cause of performance degradation in the MAPbI3 cells. Recovery of performance after recycling the degraded device by replacing with a fresh HTM layer depends on composition of perovskite, indicating loss of organic cation being involved in the process. As organic part of hybrid perovskites is believed to be responsible for poor thermal stability of these materials, all-inorganic CsPbX3 perovskites are gaining much interest these days. However, the challenge in CsPbI3 perovskties is the stabilization of its photoactive black phase under ambient conditions (at room temperature) because the balck phase is formed only at temperature above 300 oC. We have found that Eu (Eu2+ or Eu3+) inclusion into CsPbI3 precursor solution can form the black phase at ambient conditions (85 oC). Remarkable reduction of crystal/grain size possibly results in formation of the high symmetry cubic phase (α-CsPbI3). The devices made from such Eu-stabilized photoactive CsPbI3 (CsPbI3:xEu) perovskites demonstrate a power conversion efficiency of around 7% at best conditions. Nevertheless, there are number of challenges in improving the long term stability of the photoactive phase of these all-inorganic perovksites. These issues and possible ways to address them will be discussed.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.